Only in the same way that most of Illinois is conservative. Check out that state. Practically every county in Illinois is red -- EXCEPT the HUGE population center of Chicago and its near environs. They dominate the polling booths and make Illinois a very LIBERAL state.
Now in northern California, you may live in a conservative, rural county, but the voters in EVERY county in the Bay Area, and Sacramento County, vastly outnumber you. So where it counts - at the voting booth - northern California is a liberal bastion.
Sorry.
The next earthquake will put them over the edge.
That’s exactly why I would draw the line, or border if you wish, on the north side of San Francisco. In other words, put San Francisco in Southern California. That leaves Sacramento in Northern California and puts a better balance to the votes.